Given:
[tex]x=\sqrt[]{2x+3}[/tex]
To find the solutions:
Squaring on both sides we get,
[tex]\begin{gathered} x^2=2x+3 \\ x^2-2x-3=0 \\ (x+1)(x-3)=0 \\ x=-1,\text{ 3} \end{gathered}[/tex]
Hence, x=3 and x= -1 are the solutions.
Therefore, the correct option is the second one.
